| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| /* |
| * "TermStream.java" |
| * TermStream.java 1.7 01/07/10 |
| */ |
| |
| package org.netbeans.lib.terminalemulator; |
| |
| /** |
| * TermStream is analogous to unix STREAMS. |
| * <br> |
| * It is a full duplex processing and data transfer path between a raw |
| * Term (The Data Terminal Equipment, DTE) and a client of the Term, usually |
| * a process (The Data Communication Equipment, DCE). |
| * <p> |
| * TermStream's can be chained together. This is performed using |
| * @see org.netbeans.lib.terminalemulator.Term#pushStream |
| * <p> |
| * Streams are usually used (in the context of terminals) to do echoing, |
| * line buffering, CR/NL translation and so on. See |
| * @see org.netbeans.lib.terminalemulator.LineDiscipline . |
| * They can also be used for logging and debugging. |
| */ |
| |
| public abstract class TermStream { |
| protected TermStream toDTE; // delegate putChar's to toDTE |
| protected TermStream toDCE; // delegate sendChar to from_keyboard |
| |
| void setToDCE(TermStream toDCE) { |
| this.toDCE = toDCE; |
| } |
| void setToDTE(TermStream toDTE) { |
| this.toDTE = toDTE; |
| } |
| |
| void setTerm(Term term) { |
| this.term = term; |
| } |
| protected Term getTerm() { |
| return term; |
| } |
| private Term term; |
| |
| |
| // From world (DCE) to terminal (DTE) screen |
| public abstract void flush(); |
| public abstract void putChar(char c); |
| public abstract void putChars(char buf[], int offset, int count); |
| |
| // From terminal *keyboard) (DTE) to world (DCE). |
| public abstract void sendChar(char c); |
| public abstract void sendChars(char c[], int offset, int count); |
| } |